FR166zz
FR Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
FR166zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.97 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.1875"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.125"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.422"
Flange thickness
0.031"
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
8
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
136 lbf
Radial static load rating
49 lbf
Limiting speed
50 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.00008" to 0.0005"
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.32
/ each
In Stock
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FR166zz Bearing Product Overview & Core Advantages
The FR166zz is a precision miniature ball bearing designed for demanding applications requiring reliable performance in compact spaces. As a single row radial ball bearing with shielded construction, it excels at handling radial loads while offering smooth operation. Its inch-series dimensions, including a 0.1875" bore and 0.375" outside diameter, make it an ideal component for high-precision mechanisms. The bearing is characterized by its robust construction using chrome steel rings and balls, contributing to its durability and consistent performance across a wide temperature range from -86 to 230 °F.
FR166zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| FR166 | The base bearing designation, indicating the specific size and series in inch measurements. |
| zz | Denotes that the bearing is equipped with shields on both sides. These non-contact shields protect the internal components from large contaminants while minimizing friction, making the bearing suitable for high-speed applications. |
FR166zz Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The single row deep groove ball bearing construction is engineered to support significant radial dynamic loads (rated at 136 lbf) efficiently. The geometry of the raceways and the use of 8 high-precision chrome steel balls ensure stable operation under load.
- High-Speed Capability: The combination of a lightweight stainless steel cage and low-friction shielded design allows for a high limiting speed of 50,000 rpm. This makes the FR166zz a suitable choice for applications requiring rapid rotation.
- Precision and Rigidity: Manufactured to ABEC1 tolerance class and featuring a controlled radial internal clearance (MC3: 0.00008" to 0.0005"), this bearing provides consistent running accuracy and contributes to the overall system rigidity.
- Contamination Protection: The 300 Series Stainless Steel shields offer effective protection against dust and debris, extending the bearing's service life in challenging environments. Please note that lubrication is required for optimal performance.
FR166zz Bearing Typical Application Areas
This bearing is commonly specified in applications where small size, precision, and reliability are paramount. Key sectors include:
- Small Precision Motors and stepper motors
- Industrial and Instrumentation Spindles
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Radio Control Models and Drones
- Optical and Encoder Systems
